Spring-motor.



G. ARPURTH.

SPRING MOTOR.

APPLICATION FILED JULY 1, 1910.

994,360, Patented June 6, 1911.

Z SHEETS-$11331 1.

13 1 511010 co S (LARPUBTH.

SPRING MOTOR. APPLICATION FILED JULY 1, 1910.

Patented June 6, 1911.

2 SHEETS-SHEET 2.

UNITED STATES PATEN OFFICE.

CHARLES ABPURTH', OF HOBOKEINT, NEW JERSEY.

SPRING-MOTOR.

Specification of Letters Patent.

Patented J une 6. 1911.

Application filed July 1, 1910. Serial mi. 569,947.

i To all whom it may concern:

Be it known that I, CHARLES Aaron-r11, a citizen of the German Empire, residing in Hoboken, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Spring of which the following is a speciv transmitted from the motor to the fan and keeping the fan going at the required speed for a certain length of time.

The object of this invention is to furnish a ventilating fan in which the transmitting gearing between spring-motor and fan-shaft 1s simplified to such an extent that the friction in the bearings of the transmitting gearing is reduced to such an extent that the fan can not only be driven for a considerable length of time, but also in a substantially noiseless manner, so as to be capable of being used in place of electric fans, without the expense connected with the current required by the same; and for this purpose the invention consists of a ventilating fan Which comprises a spring-motor, a fan, and intermediate bevel gear and worm-gear transmissions between the housing of the spring-motor and the fan-shaft, so that rotary motion is imparted to the fan for a considerable length of'time in an effective and noiseless manner, as will be fully described hereinafter and finally pointed out .in the claims.

In the accompanying drawings, Figure 1 represents a vertlcal central section of my improved ventilating fan taken on line 1, 1, Fig. 2, Fig. 2 is a horizontal section on line 2, 2, Fig. 1, Fig. 3 is a detail" plan View partlyin section on line 3-, 3, Fig. 1, showing the worm-gear transmission for the fanshaft, and Fig. 4 is a front-elevation of my improved ventilating fan, drawn on a smaller scale. a

Similar letters of reference indicate corresponding parts throughout the different gures.

Referring to the drawings, m represents a spring-motor of any approved construc tion. The motor shown in the drawings is constructed of three spiral springs which i are attached at their inner ends to sleeves or hubs m that are secured to the shaft 8 of the motor, said shaft 8 being preferablysupported by its sonically-ta ering lower end 1n a step-bearin b? locate in the base-plate b of the fan-casing, as shown clearly in Fig. 6 5- 1. To the lower end of the motor shaft .9

is keyed a ratchet-wheel d the teeth, of

which are engaged b a spring-actuated check-pawl d, for holding the motor-shaft s in position when winding up the springs,

The upper end of the motor-shaft s 1ssup-I ported in a bearing 12 that is supported in a bracket b which projects from an upright post 6 which is attached at its lower end by means of fastening screws 6 to the base-plate b. The upright standard I) is also provided with bearings b fora horizontal windin shaft .9 to theinner end of which is keyed a bevel pinion e which meshes with a bevel gear-wheel e that is 30 mounted on the.upper end of.the motorshaft 8, while to the opposite or outer end of the shaft 8 is applied the sleeve f of a hand-crank f, said sleeve being provided with a slot f for engaging a pin f on the winding shaft 8 By tunningthe hand crank, the bevel pinion e,'the bevel gear-'- wheel 6 and the upright shaft 8 of the motor are rotated and thereby the spring or s rin 's m connected to the same wound u to the full extent. v I

' A circular plate 9 is located below the lowermost spring, which plate is connected by upright posts 9 with a bevel gear-wheel g that is mounted onthe motor-shaft s below the bevel gear-wheel 6 the bottomplate 9, upright posts 9 and gear-wheel forming the housing of the spring-motor.

The outer ends of the coil-springs of the spring-motor are applied to one of the up v 101' right posts 9 as shown in Figs. 1 and 2, so that the motor is started as soon as the handcrank is removed from the winding up shaft 8 in a direction opposite to the winding-up motion of the springs. The rotary motion '10: of the bevel gear-wheel g is transmitted to a. bevel-pinion which keyed to an inclined shaft 8 which is supported in a stepbearing of an upright post g thafiis attached to the base-plate b of the fan-casing r1o and in a neck-bearing which is formed of a conical seat at the 11 per end of the shaft .9 and the pointed end of a set-screw 'g that is secured by screw nuts 9 to the inclined extension 9 of the upright post I). To the inclined shaft a is applied a worm gearwheel 7]. which meshes with a double worm 7L on the fan-shaft s which is supported in bearings if of lugsh that are bent up from a trans erse bar h which is attached to the upper end of theinclined extension-arm g as shown clearly in Figs. 1 and 3. The fanshaft 8 is extended through the fan-casing c to the outside of the same and carries a fan 2 of any approved construction by a hub 5 The worm h is preferably a double worm formed of two independent helical windings so as to engage with the teeth of theworm gear-wheel and produce the rapid rotation of the fan in a substantially noiseless manner. A suitable Wire-guard i is preferably arranged around the fan so as to prevent injury by the blades of the same.

Any suitable mechanism may be arr: nged in connection with the spring-motor for arresting the motion of the same when it is desired to interrupt the motion of the fan.

\Vhen it is desired to start therunning of the ventilating fan, the hand-crank f is applied to the winding-up shaft 8 'and turned until the motor-spring or springs are wound up to their full extent. winding-up of the springs the check-pawl and 'atchet mechanism holds the motorshaft 8 in position for preventing the unwinding of the springs. hen the spring or springs of the motor m are wound up to their full extent, the crank-shaft is removed and the spring-housing rotated by the power stored in the'springs. The motion of the springs is transmitted by the bevel gear- Wheel g and pinion g to the intcrniedia te transmitting shaft 8 and from the same by the worm gear-wheel 72, and double worm b to the fanshaft s so that the fan is rotated at a considerable speed, due to the great number of teeth of thc bevel gearwheel and worm gear-wheel it. As the spring-motor has to overcome the comparativcly small friction of the intermediate transmitting shaft 5 and of the fan-sha ft 5 in its bearings, the frictional resistance of the bearings of the same is very small, so that the fan can be rotated for a considerable length of time without rcwinding the motor. A large number of rotations is thereby imparted to the fan-shaft in a given time, so that the effective work of the fan is the same as that of an electric fan of equal size and capacity, but without expense for the electric current.

My improved fan has the advantage that it can be placed at any desired position in the room to be ventilated that it can be run almost without any expense excepting a casual lubrication of the bearings of the During the 1 gaging the winding gear-wheel, a fan-shaft,

rotary parts, and that owing to the simphcity of construction it can be manufactured and sold at a comparatively low price,

bearing, a ratchet wheel non-rotatively se-' cured .to the motor-shaft and resting on the base plate, a pawl pivoted to the base plate and engaging the ratchet wheel, a circular plate loosely mounted on the motor-shaft "andresting on the ratchet wheel, a beveled mot-or gear-wheel loosely mounted on the motor-shaft near the upper end thereof, upright pasts connecting the peripheral parts of the circular plate and bevel gear-wheel, sleeves on said shaft between said plate and gear-wheel, springs having their outer ends secured to one of said posts, means securing the springs, on said sleeves and to the shaft, a winding gear-wheel on said shaft and resting against the motor gear-wheels, a horizontal winding shaft carrying a pinion ena transmitting mechanism between the motor gear-wheel and fan-shaft, means sup.

porting said shafts and mechanism.

2. In combination, a vertical motor shaft, a plurality of motor springs surrounding the shaft and having their inner ends attached to the shaft, a motor gear-wheel loosely mounted on the shaft near the upper part thereof, a circular plate loosely mounted on the motor-shaft below the lowermost spring, upright posts connecting the peripheries of said circular plate and wheel and to one of which the outer end of the springs are secured, a ratchet wheel rigidly mounted on the shaft below the circular plate, a pawl engaging said wheel, a winding bevel gear-wheel rigidly mounted on the shaft just above said motor gear-wheel,

winding means engaging the winding gearwhecl, an inclined shaft, a beveled pinion at the lower end of the inclined -shaft and engaging said motor gear-wheel and a WOI'JI'I gtlll'flrlflll at the upper end of the inclined shaft, a horizontal worm shaft and a worm on said, worm-shaft and engaging said worm gear.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

CHARLES ARPUR'III.

lVi tncsses:

FANNIE FISK, PAUL (lonrnn. 

